<br><table width='100%' cellpadding=3 cellspacing=3 border=0><tr valign='top'><th>Achievement</th><th>How to unlock
</th></tr><tr valign='top'><td>"Beware Planet Earth!" Turbo Prime EX Plus Alpha</td><td>Save all the cows on every level of the Story mode in Veteran difficulty.
</td></tr><tr valign='top'><td>Ain't that a cute little gun?</td><td>Survive all five 'Meet the Martians' bonus levels!
</td></tr><tr valign='top'><td>Bomberman!</td><td>Blast at least 8 Martians with one Bomb!
</td></tr><tr valign='top'><td>Challenge Accepted!</td><td>Save all the cows throughout all the Challenges.
</td></tr><tr valign='top'><td>Challenge Accepted... and Defeated!</td><td>Save all the cows throughout all the Challenges in Veteran difficulty.
</td></tr><tr valign='top'><td>Chekhov's Raygun</td><td>Someone's gotta fire it before the end.
</td></tr><tr valign='top'><td>Flawless Spring</td><td>Save all the cows on every Story level of spring.
</td></tr><tr valign='top'><td>For science...you monster.</td><td>Save all the cows on all the 'Meet the Martians' bonus levels.
</td></tr><tr valign='top'><td>GLaDOS is not gonna be glad!</td><td>Witness or cause the collapse of a quantum wormhole.
</td></tr><tr valign='top'><td>Good Cogs Never Rust</td><td>Defeat a Winter Story level without letting one Cog disappear.
</td></tr><tr valign='top'><td>I MAID A GAM3 W1TH M4RT1ANS!!!1</td><td>Save all the cows throughout the whole 'Maid Raid' Challenge category.
</td></tr><tr valign='top'><td>Impeccable Fall</td><td>Save all the cows on every Story level of fall.
</td></tr><tr valign='top'><td>Like a Boss!</td><td>Repel the Martian threat for good!
</td></tr><tr valign='top'><td>Martians can't count to three.</td><td>Save all the cows on all the 'Meet the Martians' bonus levels in Veteran difficulty.
</td></tr><tr valign='top'><td>Party time! Excellent!</td><td>Save all the cows throughout the whole 'Hard Rock from the Red Planet' Challenge category.
</td></tr><tr valign='top'><td>Perfect Summer</td><td>Save all the cows on every Story level of summer.
</td></tr><tr valign='top'><td>Save ALL the Cows!!</td><td>Save all the cows on every level of the Story mode.
</td></tr><tr valign='top'><td>Smashing Pumpkins!</td><td>Save all the cows on all the 'This is Halloween!' bonus levels.
</td></tr><tr valign='top'><td>Spotless Winter</td><td>Save all the cows on every Story level of winter.
</td></tr><tr valign='top'><td>Spring Break</td><td>Survive spring!
</td></tr><tr valign='top'><td>Sunset Rider</td><td>Survive summer!
</td></tr><tr valign='top'><td>Teenage Martian Ninja Troopers</td><td>Save all the cows throughout the whole 'Ninjas in the Snow' Challenge category.
</td></tr><tr valign='top'><td>The butterfly effect</td><td>Successfully start a chain reaction using 4 or more Explosive Barrels!
</td></tr><tr valign='top'><td>The Cow is a lie</td><td>Behold a Cow going through a quantum wormhole!
</td></tr><tr valign='top'><td>The Man With the Martian Gun</td><td>Get the Zapper.
</td></tr><tr valign='top'><td>The Old School Republic</td><td>Save all the cows throughout the whole 'Back to Basics' Challenge category.
</td></tr><tr valign='top'><td>The shield is down!</td><td>Save all the cows throughout the whole 'Weird Science' Challenge category.
</td></tr><tr valign='top'><td>They're coming to get you, Barbra!</td><td>Save all the cows throughout the whole 'Zombies of Mars' Challenge category.
</td></tr><tr valign='top'><td>Trick or Treat!</td><td>Survive all five 'This is Halloween!' bonus levels!
</td></tr><tr valign='top'><td>Welcowme on board!</td><td>Launch the game for the first time!
</td></tr><tr valign='top'><td>When you have to shoot, shoot! Don't Talk!</td><td>Use the Zapper to finish a Martian.
</td></tr><tr valign='top'><td>Who you gonna call?</td><td>Save all the cows on all the 'This is Halloween!' bonus levels in Veteran difficulty.
</td></tr><tr valign='top'><td>Winter is coming</td><td>Survive fall!
</td></tr></table>